code: def test_selu(
      *, dtype_and_input, test_flags, backend_fw, fn_name, on_device
  ):
      input_dtype, input = dtype_and_input
      test_flags.num_positional_args = len(input)
      helpers.test_function(
          input_dtypes=input_dtype,
          backend_to_test=backend_fw,
          test_flags=test_flags,
          fn_name=fn_name,
          on_device=on_device,
          atol_=1e-2,
          x=input[0],
      )
  
file_path: ivy/ivy_tests/test_ivy/test_functional/test_experimental/test_nn/test_activations.py
imports: from hypothesis import strategies
  import ivy_tests.test_ivy.helpers
  from ivy_tests.test_ivy.helpers import handle_test
label_desc: Use image node_id 10 for calling a global function with example usage: test_selu() without return types